Edited by c2sci, plocamium, lisagilbane, B Claire Arre, intertidalecologist, Sean Agler, and silvetia, some rights reserved (CC BY-SA)
Photo Credits
- 1. (c) Femorale, some rights reserved (CC BY-NC)
- 2. (c) 2007 Luigi Rignanese, some rights reserved (CC BY-NC)
- 3. (c) National Museums Northern Ireland and its licensors, some rights reserved (CC BY-NC-SA)
- 4. (c) Jerry Kirkhart, some rights reserved (CC BY)
- 5. (c) Gary Griffith, some rights reserved (CC BY-NC-SA), uploaded by Gary Griffith
- 6. (c) matt knoth, some rights reserved (CC BY-NC-ND)
- 7. (c) meriseal, some rights reserved (CC BY-NC-SA)
- 8. (c) Liam O'Brien, some rights reserved (CC BY-NC), uploaded by Liam O'Brien
- 9. (c) kathawk, some rights reserved (CC BY-NC), uploaded by kathawk
- 10. (c) Ian Cruickshank, some rights reserved (CC BY-NC), uploaded by Ian Cruickshank
- 11. (c) Damon Tighe, some rights reserved (CC BY-NC), uploaded by Damon Tighe
- 12. (c) M. Goff, some rights reserved (CC BY-NC-SA), uploaded by M. Goff
- 13. (c) BJ Stacey, some rights reserved (CC BY-NC), uploaded by BJ Stacey
- 14. (c) C. Mallory, some rights reserved (CC BY-NC), uploaded by C. Mallory
- 15. (c) Dan Hershman, some rights reserved (CC BY)
- 16. (c) Peter D. Tillman, some rights reserved (CC BY-SA)
- 17. (c) Robin Gwen Agarwal, some rights reserved (CC BY-NC), uploaded by Robin Gwen Agarwal
- 18. (c) Kiloueka, some rights reserved (CC BY-NC), uploaded by Kiloueka
- 19. (c) Donna Pomeroy, some rights reserved (CC BY-NC), uploaded by Donna Pomeroy
- 20. (c) Sean Agler, all rights reserved, uploaded by Sean Agler
- 21. (c) dlbowls, some rights reserved (CC BY-NC), uploaded by dlbowls
- 22. (c) Griff, some rights reserved (CC BY-NC), uploaded by Griff
- 23. (c) Chris Brown, some rights reserved (CC BY-NC), uploaded by Chris Brown
- 24. (c) manifa2012, some rights reserved (CC BY-NC)
- 25. (c) Ken-ichi Ueda, some rights reserved (CC BY)
- 26. (c) Minette Layne, some rights reserved (CC BY)
- 27. (c) Paul Norwood, some rights reserved (CC BY-NC), uploaded by Paul Norwood
- 28. (c) marlin harms, some rights reserved (CC BY)
- 29. (c) Don Loarie, some rights reserved (CC BY)
- 30. (c) Susannah Anderson, some rights reserved (CC BY-NC-ND)
- 31. (c) aaronbaldwin, some rights reserved (CC BY), uploaded by aaronbaldwin
- 32. (c) kyg, some rights reserved (CC BY-NC)
- 33. (c) Michael, some rights reserved (CC BY-NC), uploaded by Michael
- 34. (c) pliffgrieff, some rights reserved (CC BY-NC-SA)
- 35. (c) rowkey, some rights reserved (CC BY-NC), uploaded by rowkey
- 36. (c) cyric, some rights reserved (CC BY-NC-SA), uploaded by cyric
- 37. (c) Richard Droker, some rights reserved (CC BY-NC-ND)
- 38. (c) Matthew Salkiewicz, some rights reserved (CC BY-NC), uploaded by Matthew Salkiewicz
- 39. (c) blash, some rights reserved (CC BY-NC)
- 40. (c) Bob Peterson, some rights reserved (CC BY-SA)
- 41. (c) nettlegal78, some rights reserved (CC BY-NC)
- 42. (c) hallkara, some rights reserved (CC BY-NC), uploaded by hallkara
- 43. (c) Alison Young, some rights reserved (CC BY-NC), uploaded by Alison Young
- 44. (c) anonymous, some rights reserved (CC BY-NC)
- 45. (c) Tanya Dewey, Animal Diversity Web, some rights reserved (CC BY-NC-SA)
- 46. (c) Tim Giller, some rights reserved (CC BY-NC), uploaded by Tim Giller
- 47. (c) Rebecca Johnson, some rights reserved (CC BY-NC), uploaded by Rebecca Johnson
- 48. (c) Liz Felando, some rights reserved (CC BY-NC), uploaded by Liz Felando
- 49. (c) kqedquest, some rights reserved (CC BY-NC)
- 50. (c) 2005 California Academy of Sciences, some rights reserved (CC BY-NC-SA)
- 51. (c) Mah, Christopher, some rights reserved (CC BY-NC-SA)
- 52. (c) 2006 California Academy of Sciences, some rights reserved (CC BY-NC-SA)
- 53. (c) David Bygott, some rights reserved (CC BY-NC-SA)
- 54. (c) 2002 California Academy of Sciences, some rights reserved (CC BY-NC-SA)
- 55. (c) Bernard Picton, some rights reserved (CC BY-NC-SA)
- 56. (c) seaslugin, some rights reserved (CC BY-NC), uploaded by seaslugin
- 57. (c) Biopix, some rights reserved (CC BY-NC)
- 58. (c) Wendy Feltham, all rights reserved, uploaded by Wendy Feltham